<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>World Wide Web Wikipedia</title>
</head>
<aside>
    <a>Not logged in</a> <a>Talk</a> <a>Contributions</a> <a>Create</a> <a>account</a> <a>Log in</a>
</aside>
<aside>
    Article Talk
</aside>
<aside>
    Read Edit View history
</aside>
<main>
    <article>
        <hgroup>
            <h1>World Wide Web</h1>
            <h2>From Wikipedia, the free encyclopedia</h2>
        </hgroup>
        <div class="note">
            "<abbr>WWW</abbr>" and "The Web" redirect here. For other uses of WWW, see WWW (disambiguation). For other uses of web, see Web (disambiguation). For the first web software, see WorldWideWeb. Not to be confused with the Internet.
        </div>

        <p>The World Wide Web, also known as the WWW and the Web, is an information space where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and accessible via the Internet.<sup>[1]</sup>            English scientist Tim Berners-Lee invented the World Wide Web in 1989. He wrote the first web browser in 1990 while employed at CERN near Geneva, Switzerland.[2][3] The browser was released outside CERN in 1991, first to other research institutions
            starting in January <time>1991</time> and to the general public on the Internet in August 1991.</p>

        <p>The World Wide Web has been central to the development of the Information Age and is the primary tool billions of people use to interact on the Internet.[4][5][6] Web pages are primarily text documents formatted and annotated with Hypertext Markup
            Language (HTML).[7] In addition to formatted text, web pages may contain images, video, audio, and software components that are rendered in the user's web browser as coherent pages of multimedia content.</p>

        <p>Embedded hyperlinks permit users to navigate between web pages. Multiple web pages with a common theme, a common domain name, or both, make up a website. Website content can largely be provided by the publisher, or interactively where users contribute
            content or the content depends upon the users or their actions. Websites may be mostly informative, primarily for entertainment, or largely for commercial, governmental, or non-governmental organisational purpose.</p>
    </article>
    <div>
        <h3>Contents</h3>
        <nav>
            <ol>
                <li><a href="#">History</a></li>
                <li><a href="#">Function</a></li>
                <ol>
                    <li><a href="#">Linking</a></li>
                    <li><a href="#">Dynamic updates of web pages</a></li>
                    <li><a href="#">WWW prefix</a></li>
                    <li><a href="#">Scheme specifiers</a></li>
                </ol>
                <li><a href="#">Web security</a></li>
                <li><a href="#">Privacy</a></li>
                <li><a href="#">Standards</a></li>
                <li><a href="#">Accessibility</a></li>
                <li><a href="#">Internationalisation</a></li>
                <li><a href="#">Statistics</a></li>
                <li><a href="#">Web caching</a></li>
                <li><a href="#">See also</a></li>
                <li><a href="#">References</a></li>
                <li><a href="#">Further reading</a></li>
                <li><a href="#">External links</a></li>
            </ol>
        </nav>
    </div>

    <section>
        <hgroup>
            <h1>History</h1>
            <h2>Main article: History of the World Wide Web</h2>
        </hgroup>
        <p>Tim Berners-Lee's vision of a global hyperlinked information system became a possibility by the second half of the 1980s.[8] By 1985, the global Internet began to proliferate in Europe and the Domain Name System (upon which the Uniform Resource
            Locator is built) came into being. In 1988 the first direct IP connection between Europe and North America was made and Berners-Lee began to openly discuss the possibility of a web-like system at CERN.[9] In March 1989 Berners-Lee issued a
            proposal to the management at CERN for a system called "Mesh" that referenced ENQUIRE, a database and software project he had built in 1980, which used the term "web" and described a more elaborate information management system based on links
            embedded in readable text: "Imagine, then, the references in this document all being associated with the network address of the thing to which they referred, so that while reading this document you could skip to them with a click of the mouse."
            Such a system, he explained, could be referred to using one of the existing meanings of the word hypertext, a term that he says was coined in the 1950s. There is no reason, the proposal continues, why such hypertext links could not encompass
            multimedia documents including graphics, speech and video, so that Berners-Lee goes on to use the term hypermedia.[10]</p>
        <figure style="float: right;">
            <img style="width: 30%; height: 30%;" src="https://qn0.60logo.com/user/works/2020/05/06/dd05a109b2b06535864771ccbec7554c.jpg" />
            <figcaption>
                Graphic representation of a minute fraction of the WWW, demonstrating hyperlinks
            </figcaption>
        </figure>

        <p>With help from his colleague and fellow hypertext enthusiast Robert Cailliau he published a more formal proposal on 12 November 1990 to build a "Hypertext project" called "WorldWideWeb" (one word) as a "web" of "hypertext documents" to be viewed
            by "browsers" using a client–server architecture.[11] At this point HTML and HTTP had already been in development for about two months and the first Web server was about a month from completing its first successful test. This proposal estimated
            that a read-only web would be developed within three months and that it would take six months to achieve "the creation of new links and new material by readers, [so that] authorship becomes universal" as well as "the automatic notification
            of a reader when new material of interest to him/her has become available." While the read-only goal was met, accessible authorship of web content took longer to mature, with the wiki concept, WebDAV, blogs, Web 2.0 and RSS/Atom.[12]</p>


        <p>The CERN data centre in 2010 housing some WWW servers The proposal was modelled after the SGML reader Dynatext by Electronic Book Technology, a spin-off from the Institute for Research in Information and Scholarship at Brown University. The Dynatext
            system, licensed by CERN, was a key player in the extension of SGML ISO 8879:1986 to Hypermedia within HyTime, but it was considered too expensive and had an inappropriate licensing policy for use in the general high energy physics community,
            namely a fee for each document and each document alteration. A NeXT Computer was used by Berners-Lee as the world's first web server and also to write the first web browser, WorldWideWeb, in 1990. By Christmas 1990, Berners-Lee had built all
            the tools necessary for a working Web:[13] the first web browser (which was a web editor as well) and the first web server. The first web site,[14] which described the project itself, was published on 20 December 1990.[15]</p>

        <p>The first web page may be lost, but Paul Jones of UNC-Chapel Hill in North Carolina announced in May 2013 that Berners-Lee gave him what he says is the oldest known web page during a 1991 visit to UNC. Jones stored it on a magneto-optical drive
            and on his NeXT computer.[16] On 6 August 1991, Berners-Lee published a short summary of the World Wide Web project on the newsgroup alt.hypertext.[17] This date is sometimes confused with the public availability of the first web servers,
            which had occurred months earlier. As another example of such confusion, several news media reported that the first photo on the Web was published by Berners-Lee in 1992, an image of the CERN house band Les Horribles Cernettes taken by Silvano
            de Gennaro; Gennaro has disclaimed this story, writing that media were "totally distorting our words for the sake of cheap sensationalism."[18]</p>

        <p>The first server outside Europe was installed at the Stanford Linear Accelerator Center (SLAC) in Palo Alto, California, to host the SPIRES-HEP database. Accounts differ substantially as to the date of this event. The World Wide Web Consortium's
            timeline says December 1992,[19] whereas SLAC itself claims December 1991,[20][21] as does a W3C document titled A Little History of the World Wide Web.[22] The underlying concept of hypertext originated in previous projects from the 1960s,
            such as the Hypertext Editing System (HES) at Brown University, Ted Nelson's Project Xanadu, and Douglas Engelbart's oN-Line System (NLS). Both Nelson and Engelbart were in turn inspired by Vannevar Bush's microfilm-based memex, which was
            described in the 1945 essay "As We May Think".[23]</p>
        <p>Berners-Lee's breakthrough was to marry hypertext to the Internet. In his book Weaving The Web, he explains that he had repeatedly suggested that a marriage between the two technologies was possible to members of both technical communities, but
            when no one took up his invitation, he finally assumed the project himself. In the process, he developed three essential technologies:</p>
        <ul>
            <li>a system of globally unique identifiers for resources on the Web and elsewhere, the universal document identifier (UDI), later known as uniform resource locator (URL) and uniform resource identifier (URI);</li>
            <li>the publishing language HyperText Markup Language (HTML);</li>
            <li>the Hypertext Transfer Protocol (HTTP).[24]</li>
        </ul>


    </section>
    <section>
        <h1>Function</h1>
        <p>The terms <dfn>Internet and World Wide Web</dfn> are often used without much distinction. However, the two are not the same. The Internet is a global system of interconnected computer networks. In contrast, the World Wide Web is a global collection
            of documents and other resources, linked by hyperlinks and URIs. Web resources are accessed using HTTP or HTTPS, which are application-level Internet protocols that use the Internet's transport protocols.[34]</p>
    </section>
    <section>
        <h1>References</h1>
        "<cite>What is the difference between the Web and the Internet?</cite>". W3C Help and FAQ. W3C. 2009. Archived from the original on 9 July 2015. Retrieved 16 July 2015.
        <pre>
GET /home.html HTTP/1.1
Host: www.example.org
        </pre>
        <code>
GET /home.html HTTP/1.1
Host: www.example.org
        </code>
    </section>
</main>

<aside>
    Main page Contents Featured content Current events Random article Donate to Wikipedia Wikipedia store Interaction Help About Wikipedia Community portal Recent changes Contact page Tools What links here Related changes Upload file Special pages Permanent
    link Page information Wikidata item Cite this page Print/export Create a book Download as PDF Printable version In other projects Wikimedia Commons Wikibooks Languages العربية Español हिन्दी Bahasa Indonesia Bahasa Melayu Русский اردو 粵語 中文
</aside>

<body>

</body>

</html>